JP5006868B2 - Suture needle - Google Patents

Suture needle Download PDF

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JP5006868B2
JP5006868B2 JP2008335038A JP2008335038A JP5006868B2 JP 5006868 B2 JP5006868 B2 JP 5006868B2 JP 2008335038 A JP2008335038 A JP 2008335038A JP 2008335038 A JP2008335038 A JP 2008335038A JP 5006868 B2 JP5006868 B2 JP 5006868B2
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needle
concave
cross
section
curved
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JP2010154961A (en
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強 植竹
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Keisei Medical Industrial Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A61B2017/06071—Needles, e.g. needle tip configurations with an abrupt angle formed between two adjacent sections

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Description

本発明は、例えば外科手術で使用される針本体の先端部に湾曲部位が設けられた縫合針に関するものである。   The present invention relates to a suture needle in which a curved portion is provided at the distal end portion of a needle body used, for example, in a surgical operation.

例えば外科手術で使用される針本体の先端部に湾曲部位が設けられた縫合針として、体組織への刺入性を向上すべく、本出願人は、特開２０００−１３９９３１号に開示されるように針本体の断面形状を多角形にした縫合針や、特開２００７−２６８１３６号に開示されるように針本体の周面対向位置にして長さ方向に凹溝部を形成した縫合針を提案している。   For example, the applicant of the present invention is disclosed in Japanese Patent Application Laid-Open No. 2000-139931 in order to improve the penetration into a body tissue as a suture needle provided with a curved portion at the tip of a needle body used in a surgical operation. Proposal of a suture needle having a polygonal cross-sectional shape of the needle body and a suture needle having a groove in the length direction at the position facing the peripheral surface of the needle body as disclosed in Japanese Patent Application Laid-Open No. 2007-268136 is doing.

これら縫合針は、体組織へ刺入した際、刺入した部位（体組織）との接触面積が少なくなることで刺入抵抗が低減され、よって、体組織への負荷がかかり難く良好な縫合作業が行えるものである。   When these suture needles are inserted into a body tissue, the contact resistance with the site (body tissue) where the needle is inserted is reduced, so that the resistance to insertion is reduced. The work can be done.

特開２０００−１３９９３１号公報JP 2000-139931 A 特開２００７−２６８１３６号公報JP 2007-268136 A

本発明者は、これら針本体の先端部に湾曲部位が設けられた縫合針について更なる研究・実験を重ね、その結果、従来にない作用効果を発揮する画期的な縫合針を開発した。   The present inventor has further researched and experimented on a suture needle in which a curved portion is provided at the tip of the needle body, and as a result, has developed an innovative suture needle that exhibits an unprecedented effect.

添付図面を参照して本発明の要旨を説明する。   The gist of the present invention will be described with reference to the accompanying drawings.

針本体１の先端部に湾曲部位が設けられた縫合針であって、前記湾曲部位の外面部には凹部３が設けられ、この凹部３の縁部が凸状の小刃２に設定されていることを特徴とする縫合針に係るものである。   The needle body 1 is a suture needle provided with a curved portion at the distal end portion thereof, and a concave portion 3 is provided on an outer surface portion of the curved portion, and an edge portion of the concave portion 3 is set to a convex blade 2. The present invention relates to a suturing needle characterized by having

また、請求項１記載の縫合針において、前記凹部３は複数設けられていることを特徴とする縫合針に係るものである。   The suture needle according to claim 1, wherein a plurality of the recesses 3 are provided.

また、請求項１，２いずれか１項に記載の縫合針において、前記凹部３は前記針本体１の長さ方向に複数並設されていることを特徴とする縫合針に係るものである。   Further, in the suturing needle according to any one of claims 1 and 2, a plurality of the recessed portions 3 are arranged in parallel in the length direction of the needle body 1.

また、請求項１〜３いずれか１項に記載の縫合針において、前記湾曲部位の外面部には、前記針本体１の長さ方向に長さを有する直線状の峰部５ａが設けられ、この峰部５ａには該峰部５ａを分断する前記凹部３が設けられ、この凹部３の縁部にして前記峰部５ａが前記凸状の小刃２に設定されていることを特徴とする縫合針に係るものである。   Further, in the suturing needle according to any one of claims 1 to 3, a linear ridge portion 5a having a length in the length direction of the needle body 1 is provided on an outer surface portion of the curved portion, The ridge portion 5a is provided with the concave portion 3 for dividing the ridge portion 5a, and the ridge portion 5a is set to the convex small blade 2 at the edge of the concave portion 3. It relates to a suture needle.

また、請求項１〜４いずれか１項に記載の縫合針において、前記湾曲部位の外面部，内面部の一方若しくは双方に凹溝部４が前記針本体１の長さ方向に設けられていることを特徴とする縫合針に係るものである。   Moreover, the suturing needle of any one of Claims 1-4 WHEREIN: The recessed groove part 4 is provided in the length direction of the said needle main body 1 in the one or both of the outer surface part of the said curved part, and an inner surface part. The present invention relates to a suture needle characterized by the following.

また、請求項５記載の縫合針において、前記凹溝部４は複数本設けられていることを特徴とする縫合針に係るものである。   The suture needle according to claim 5, wherein a plurality of the concave groove portions 4 are provided.

また、請求項１〜６いずれか１項に記載の縫合針において、前記湾曲部位は断面多角形状部５であり、この断面多角形状部５における角縁５ａ同士間は凹湾曲面５ｂに形成されていることを特徴とする縫合針に係るものである。   Moreover, the suturing needle of any one of Claims 1-6 WHEREIN: The said curved site | part is the cross-sectional polygonal-shaped part 5, Between the corner edges 5a in this cross-sectional polygonal-shaped part 5 is formed in the concave curved surface 5b. The present invention relates to a suturing needle characterized by

また、請求項７記載の縫合針において、前記断面多角形状部５は形状の異なる断面多角形状部５’，５”を前記針本体１の長さ方向に連設して構成されていることを特徴とする縫合針に係るものである。   Further, in the suturing needle according to claim 7, the polygonal section 5 having a cross-section is configured by connecting polygonal sections 5 ′ and 5 ″ having different shapes in the length direction of the needle body 1. This relates to a characteristic suture needle.

また、請求項８記載の縫合針において、前記断面多角形状部５は前記針本体１の先端側に設けられる断面三角形状部５’と、この断面三角形状部５’よりも基端側に設けられる断面四角形状部５”とが連設された構成であることを特徴とする縫合針に係るものである。   9. The suture needle according to claim 8, wherein the polygonal section 5 is provided on the distal end side of the needle body 1 and on the proximal side of the triangular section 5 '. The present invention relates to a suturing needle characterized by having a configuration in which a square-shaped section 5 ″ to be formed is continuously provided.

また、針本体１の先端部に湾曲部位が設けられた縫合針であって、前記湾曲部位の外面部には凹凸部が設けられ、この凹凸部の凸部が小刃２に設定されていることを特徴とする縫合針に係るものである。   Further, the needle body 1 is a suture needle provided with a curved portion at the distal end portion thereof, and an uneven portion is provided on the outer surface portion of the curved portion, and the convex portion of the uneven portion is set to the small blade 2. The present invention relates to a suture needle characterized by that.

また、請求項１０記載の縫合針において、前記凹凸部の凹部は複数設けられていることを特徴とする縫合針に係るものである。   11. The suture needle according to claim 10, wherein a plurality of concave portions of the concavo-convex portion are provided.

また、請求項１０，１１いずれか１項に記載の縫合針において、前記凹凸部の凹部は前記針本体１の長さ方向に複数並設されていることを特徴とする縫合針に係るものである。   The suture needle according to any one of claims 10 and 11, wherein a plurality of concave portions of the concavo-convex portion are arranged side by side in the length direction of the needle body 1. is there.

また、請求項１〜１２いずれか１項に記載の縫合針において、前記針本体１の先端から基端側所定位置にかけて断面円形状部６が設けられていることを特徴とする縫合針に係るものである。   The suture needle according to any one of claims 1 to 12, wherein a circular section 6 is provided from the distal end of the needle body 1 to a predetermined position on the proximal end side. Is.

本発明は上述のように構成したから、例えば体組織へ刺入した際の刺入抵抗が可及的に低減され、体組織への負荷がかかり難く良好な縫合が行なえることになるなど従来にない作用効果を発揮する画期的な縫合針となる。   Since the present invention is configured as described above, for example, the insertion resistance when inserting into a body tissue is reduced as much as possible, and it is difficult to apply a load to the body tissue and a good suture can be performed. It is an epoch-making suture needle that exhibits an unprecedented effect.

好適と考える本発明の実施形態を、図面に基づいて簡単に説明する。   Embodiments of the present invention considered to be suitable will be briefly described with reference to the drawings.

体組織に刺入した際、湾曲部位の外面部に設けられた凹部３の存在により、体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減される。   When the body tissue is inserted, the presence of the concave portion 3 provided on the outer surface portion of the curved portion reduces the contact area with the body tissue, so that the insertion resistance to the body tissue is reduced as much as possible.

また、この凹部３の縁部が凸状の小刃２に設定されており、体組織へ刺入した際、この小刃２によって体組織を鋭利に切り込むことになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Further, the edge of the recess 3 is set to a convex blade 2, and when the body tissue is inserted, the body tissue is sharply cut by the blade 2 and inserted into the body tissue. The insertion resistance at the time is reduced as much as possible.

従って、特に体組織への刺入開始時に最も抵抗のかかる先端部に設けた湾曲部位の外面部での刺入抵抗が可及的に低減され、これをきっかけとして、その後の基端側部位における刺入が円滑に行なわれることにもなり、よって、体組織への負荷がかかり難く良好な縫合作業が行なわれることになる。   Therefore, the puncture resistance at the outer surface portion of the curved portion provided at the distal end where the resistance is greatest at the start of puncture to the body tissue is reduced as much as possible. The insertion can be performed smoothly, and therefore, a good suturing operation is performed with little load on the body tissue.

また、請求項５記載の発明のように、湾曲部位の外面部，内面部の一方若しくは双方に凹溝部４が針本体１の長さ方向に設けられている場合には、この凹溝部４の存在によっても体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減される。   Further, as in the fifth aspect of the present invention, when the concave groove portion 4 is provided in one or both of the outer surface portion and the inner surface portion of the curved portion in the length direction of the needle body 1, Even if it exists, the contact area with the body tissue is reduced, so that the penetration resistance to the body tissue is reduced as much as possible.

また、請求項７記載の発明のように、針本体１の湾曲部位は断面多角形状部５であり、この断面多角形状部５における角縁５ａ同士間は凹湾曲面５ｂに形成されている場合には、例えば断面円形状部の場合に比し、断面多角形状部５の存在及び断面多角形状部５における角縁５ａ同士間の凹湾曲面５ｂの存在によっても体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減され、しかも、断面多角形状部５における角縁５ａによって体組織を鋭利に切り込むことになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Further, as in the invention of claim 7, the curved portion of the needle body 1 is a polygonal section 5 in cross section, and the corner edges 5 a in the polygonal section 5 are formed in a concave curved surface 5 b. For example, the contact area with the body tissue is small due to the presence of the cross-sectional polygonal part 5 and the presence of the concave curved surface 5b between the corner edges 5a in the cross-sectional polygonal part 5 as compared with the case of the circular cross-sectional part. Therefore, the puncture resistance to the body tissue is reduced as much as possible, and the body tissue is sharply cut by the corner edge 5a in the cross-sectional polygonal shape portion 5, so that the puncture resistance when piercing into the body tissue is obtained. Will be reduced as much as possible.

また、請求項８記載の発明のように、断面多角形状部５は形状の異なる断面多角形状部５’，５”を針本体１の長さ方向に連設して構成されている場合には、単なる同一断面形状が続く部位を刺入する場合に比し、刺入途時にてこの形状変化により切り込み作用が生じ、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Further, as in the eighth aspect of the invention, when the polygonal section 5 is formed by connecting the polygonal sections 5 ′ and 5 ″ having different shapes in the length direction of the needle body 1, Compared to the case where a mere portion having the same cross-sectional shape is inserted, a cutting action occurs due to this shape change during insertion, and the insertion resistance when inserting into a body tissue is reduced as much as possible. It will be.

本発明の具体的な実施例１について図１〜10に基づいて説明する。   A specific embodiment 1 of the present invention will be described with reference to FIGS.

本実施例は、外科手術で使用される縫合針である。   This embodiment is a suture needle used in a surgical operation.

具体的には、針本体１は、図１〜３に図示したように適宜な金属製の部材を湾曲棒状に形成したものであり、その先端には先鋭部１ａが設けられ、基端には縫合糸７を嵌挿連結する断面円形状にして直線状の連結部１ｂ（凹部）が設けられている。尚、本実施例では、針本体１に後述する断面多角形状部５を形成した後、針本体１の先端から基端側所定位置Ｐ１にかけての範囲に湾曲部位を形成している。   Specifically, the needle body 1 is formed by forming an appropriate metal member in the shape of a curved bar as shown in FIGS. 1 to 3, and has a pointed portion 1 a at its tip, and a base end. A straight connecting portion 1b (concave portion) is provided in a circular cross section for inserting and connecting the suture thread 7. In the present embodiment, after forming a polygonal section 5 to be described later on the needle body 1, a curved portion is formed in a range from the distal end of the needle body 1 to the proximal side predetermined position P1.

また、針本体１は、図１〜４に図示したように湾曲部位に断面多角形状部５が形成されている。   Further, the needle body 1 is formed with a polygonal section 5 in a curved portion as shown in FIGS.

本実施例では、この断面多角形状部５は形状の異なる断面多角形状部５’，５”を針本体１の長さ方向に並設して構成されており、具体的には、針本体１の先端から基端側所定位置Ｐ２までの間に設けられる断面三角形状部５’と、この断面三角形状部５’よりも基端側（基端側所定位置Ｐ２から基端側所定位置Ｐ１までの間）に設けられる断面四角形状部５”とで構成されている。   In the present embodiment, the polygonal section 5 is formed by arranging the polygonal sections 5 ′ and 5 ″ having different shapes in the length direction of the needle body 1. The cross-sectional triangular portion 5 ′ provided between the distal end of the first portion and the base end side predetermined position P 2, and the base end side (from the base end side predetermined position P 2 to the base end side predetermined position P 1). And a section 4 ″ having a quadrangular cross section.

この構成から、針本体１の先端部にして湾曲部位の外面部中央位置には、針本体１の長さ方向に長さを有する先鋭の角縁５ａ（峰部）が設けられる。   From this configuration, a sharp corner edge 5 a (peak portion) having a length in the length direction of the needle body 1 is provided at the center position of the outer surface portion of the curved portion as the distal end portion of the needle body 1.

また、断面三角形状部５’は、図５，６，７に図示したように先端から基端側にかけて徐々に径が大きくなる三角形状に形成されており、断面四角形状部５”は、図８，９，10に図示したように先端側から基端側にかけて徐々に底辺が広くなる四角形状に形成されている。   Further, as shown in FIGS. 5, 6, and 7, the cross-sectional triangular portion 5 ′ is formed in a triangular shape having a diameter that gradually increases from the distal end to the proximal end side. As shown in FIGS. 8, 9, and 10, it is formed in a quadrangular shape whose base gradually becomes wider from the distal end side to the proximal end side.

また、この断面多角形状部５（断面三角形状部５’及び断面四角形状部５”）における角縁５ａ同士間の面は凹湾曲面５ｂに形成されている。   Further, the surface between the corner edges 5a in the polygonal section 5 (triangular section 5 'and rectangular section 5' ') is formed as a concave curved surface 5b.

また、針本体１の先端部にして湾曲部位の外面部には凹部３が設けられ、この凹部３の縁部が凸状の小刃２に設定されている。   Further, a concave portion 3 is provided on the outer surface portion of the curved portion at the distal end portion of the needle body 1, and an edge portion of the concave portion 3 is set to a convex blade 2.

具体的には、この小刃２は、図１〜４に図示したように該針本体１の先端部（断面三角形状部５’）にして湾曲部位の外面部に形成された峰部５ａ（角縁）に針本体１の軸心方向へ向けて凹部３を複数設け、この凹部３の縁部にして峰部５ａが凸状の小刃２に設定されており、小刃２は針本体１の長さ方向に複数並設されている。   Specifically, as shown in FIGS. 1 to 4, the small blade 2 has a ridge portion 5 a (a triangular portion 5 ′ of the needle body 1) formed on the outer surface portion of the curved portion. A plurality of recesses 3 are provided on the corner edge) in the axial direction of the needle body 1, and the ridges 5 a are set as convex edges 2 at the edges of the recess 3. A plurality are arranged in the length direction of 1.

また、本実施例では、図３に図示したように凹部３を針本体１の先端側に傾斜した状態で設けることで各小刃２を設けている。   Further, in this embodiment, each small blade 2 is provided by providing the recess 3 in a state inclined to the distal end side of the needle body 1 as shown in FIG.

尚、本実施例では、図11に図示したように湾曲部位の外面部に形成された峰部５ａに凹部３を設けているが、これに限らず、図12〜15に図示したように峰部５ａを間に介した左右の面に凹部３を設けるようにしたり、凹部３の形状も種々選択し得るものである。   In this embodiment, as shown in FIG. 11, the concave portion 3 is provided in the peak portion 5a formed on the outer surface portion of the curved portion. However, the present invention is not limited to this, and the peaks as shown in FIGS. The recesses 3 can be provided on the left and right surfaces with the portion 5a interposed therebetween, and the shape of the recesses 3 can be selected variously.

従って、本実施例は、この針本体１の先端部にして湾曲部位の外面部に複数の凹部３を設けて複数の小刃２を設けたことにより、例えば体組織に刺入した際、凹部３により体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減され、しかも、小刃２によって体組織を鋭利に切り込むことになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Therefore, in this embodiment, the tip of the needle body 1 is provided with a plurality of recesses 3 and provided with a plurality of small blades 2 on the outer surface portion of the curved portion. 3, the contact area with the body tissue is reduced, so that the piercing resistance to the body tissue is reduced as much as possible, and the body tissue is sharply cut by the small blade 2 and inserted into the body tissue. The insertion resistance is reduced as much as possible.

尚、小刃２としては、湾曲部位の外面部に凸部を間隔を介して並設される凹凸部を設け、この凹凸部の凸部を小刃２に設定するようにしても良い。   In addition, as the small blade 2, the uneven | corrugated | grooved part which arranges a convex part in parallel on the outer surface part of a curved part via the space | interval may be provided, and the convex part of this uneven | corrugated | grooved part may be set to the small blade 2. FIG.

また、本実施例は、針本体１の湾曲部位の外面部及び内面部の双方には、直線状の凹溝部４が該針本体１の長さ方向に設けられており、本実施例では、断面四角形状部５”における外面部，内面部の双方に設けている。尚、凹溝部４は外面部，内面部の一方のみに設けても良く、各面に複数本ずつ設けるようにしても良く、また、この外面部及び内面部のみに限らず、湾曲部位の左右側面部にも一本ずつ若しくは複数本ずつ設けるようにしても良い。   Further, in this embodiment, linear concave grooves 4 are provided in the length direction of the needle body 1 on both the outer surface portion and the inner surface portion of the curved portion of the needle body 1, and in this embodiment, It is provided on both the outer surface portion and the inner surface portion of the square-shaped portion 5 ". The concave groove portion 4 may be provided only on one of the outer surface portion and the inner surface portion, or a plurality of grooves may be provided on each surface. In addition, not only the outer surface portion and the inner surface portion, but also one or a plurality of them may be provided on the left and right side surfaces of the curved portion.

この凹溝部４を設けたことにより、例えば体組織に刺入した針本体１を引き抜く際、針本体１の周面に設けられた凹溝部４により体組織との接触面積が少なくなるため該体組織に対する刺入抵抗は可及的に低減されることになる。   By providing the concave groove portion 4, for example, when the needle body 1 inserted into the body tissue is pulled out, the contact area with the body tissue is reduced by the concave groove portion 4 provided on the peripheral surface of the needle body 1. The penetration resistance to the tissue will be reduced as much as possible.

本実施例は上述のように構成したから、体組織に刺入した際、針本体１の先端部にして湾曲部位の外面部に設けられた凹部３の存在により、体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減される。   Since the present embodiment is configured as described above, when the body tissue is inserted, the contact area with the body tissue is increased due to the presence of the concave portion 3 provided on the outer surface portion of the curved portion as the distal end portion of the needle body 1. Therefore, the insertion resistance to the body tissue is reduced as much as possible.

また、本実施例は、凹部３を設けることで凸状となる小刃２が針本体１の長さ方向に複数並設されており、針本体１を先端から体組織へ刺入した際、これら小刃２によって体組織を鋭利に切り込むことになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Further, in this embodiment, a plurality of small blades 2 that are convex by providing the concave portion 3 are arranged in parallel in the length direction of the needle body 1, and when the needle body 1 is inserted from the tip into the body tissue, These small blades 2 cut the body tissue sharply, and the insertion resistance when inserting into the body tissue is reduced as much as possible.

よって、本実施例によれば、特に体組織への刺入開始時に最も抵抗のかかる針本体１の先端部である湾曲部位の外面部での刺入抵抗が可及的に低減され、これをきっかけとして、その後の針本体１の基端側部位における刺入が円滑に行なわれることにもなり、よって、体組織への負荷がかかり難く良好な縫合作業が行なわれることになる。   Therefore, according to the present embodiment, the insertion resistance at the outer surface portion of the curved portion, which is the distal end portion of the needle body 1 that is most resistant at the start of insertion into the body tissue, is reduced as much as possible. As a trigger, the subsequent insertion into the proximal end portion of the needle body 1 can be performed smoothly, and therefore, a good suturing operation is performed with little load on the body tissue.

また、本実施例は、針本体１の湾曲部位の外面部及び内面部の双方に凹溝部４が針本体１の長さ方向に設けられているから、この凹溝部４の存在によっても体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減される。   Further, in this embodiment, since the concave groove portion 4 is provided in the length direction of the needle main body 1 on both the outer surface portion and the inner surface portion of the curved portion of the needle main body 1, body tissue is also formed by the presence of the concave groove portion 4. Therefore, the resistance to insertion into the body tissue is reduced as much as possible.

また、本実施例は、針本体１の湾曲部位に断面多角形状部５が形成されており、この断面多角形状部５における角縁５ａ同士間の面は凹湾曲面５ｂに形成されているから、例えば断面円形状部の場合に比し、断面多角形状部５の存在及び断面多角形状部５における角縁５ａ同士間の凹湾曲面５ｂの存在によっても体組織との接触面積が少なくなるため該体組織に対する刺入抵抗が可及的に低減され、しかも、断面多角形状部５における角縁５ａによって体組織を鋭利に切り込むことになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。   Further, in this embodiment, the polygonal section 5 is formed in the curved portion of the needle body 1, and the surface between the corner edges 5a in the polygonal section 5 is formed as a concave curved surface 5b. For example, compared to the case of a circular cross-section, the contact area with the body tissue is reduced by the presence of the cross-section polygon 5 and the concave curved surface 5b between the corner edges 5a of the cross-section polygon 5. The insertion resistance to the body tissue is reduced as much as possible, and the body tissue is sharply cut by the corner edge 5a in the polygonal section 5 so that the insertion resistance when inserting into the body tissue is possible. It will be reduced as much as possible.

また、本実施例は、断面多角形状部５は形状の異なる断面多角形状部５’，５”を針本体１の長さ方向に並設して構成されている場合には、刺入途時にて形状変化させることで切り込み作用を生じさせることになり、体組織に刺入した際の刺入抵抗が可及的に低減されることになる。具体的には、本実施例は、断面多角形状部５は針本体１の先端側に設けられる断面三角形状部５Ａと、この断面三角形状部５Ａよりも基端側に設けられる断面四角形状部５Ｂとで構成されているから、刺入途時にて角の数が増える形状変化させることで切り込み作用を生じさせることになり、体組織に刺入した際の刺入抵抗を可及的に低減できることになる。   Further, in the present embodiment, when the polygonal cross section 5 is configured by arranging the polygonal cross sections 5 ′ and 5 ″ having different shapes in the length direction of the needle body 1, the cross-section polygonal part 5 When the shape is changed, a cutting action is generated, and the insertion resistance when the body tissue is inserted is reduced as much as possible. Since the shape portion 5 is composed of a cross-sectional triangular portion 5A provided on the distal end side of the needle body 1, and a cross-sectional square-shaped portion 5B provided closer to the proximal end side than the cross-sectional triangular portion 5A, By changing the shape that the number of corners sometimes increases, a cutting action is produced, and the insertion resistance when inserting into the body tissue can be reduced as much as possible.

本発明の具体的な実施例２について図16〜18に基づいて説明する。   A specific second embodiment of the present invention will be described with reference to FIGS.

本実施例は、図16に図示したように凹部３を針本体１の基端側に傾斜した状態で設けることで各小刃２を設け、且つ、図17に図示したように針本体１の先端から基端側所定位置Ｐ３までの間に断面円形状部６を設けた場合である。   In the present embodiment, each small blade 2 is provided by providing the recess 3 in a state inclined to the proximal end side of the needle main body 1 as shown in FIG. 16, and the needle main body 1 as shown in FIG. This is a case where the circular section 6 is provided between the front end and the base end side predetermined position P3.

その余は実施例１と同様である。   The rest is the same as in Example 1.

本発明の具体的な実施例３について図19〜21に基づいて説明する。   A specific third embodiment of the present invention will be described with reference to FIGS.

本実施例は、図19に図示したように断面円形状である針本体１の先端部にして湾曲部位の外面部の中央位置に、断面Ｖ字状に面取りすることで針本体１の長さ方向に長さを有する先鋭の角縁５ａ（峰部）が設けられ、この峰部５ａに凹部３を設けることで凸状となる小刃２が針本体１の長さ方向に複数並設した場合である。この構成から、小刃２と後述する凹溝部４が設けられる部位以外の針本体１の周面は湾曲円弧面となる。   In the present embodiment, as shown in FIG. 19, the length of the needle body 1 is obtained by chamfering the distal end portion of the needle body 1 having a circular shape at the center position of the outer surface portion of the curved portion into a V-shaped section. A sharp corner edge 5a (peak portion) having a length in the direction is provided, and a plurality of small blades 2 that are convex by providing the concave portion 3 in the peak portion 5a are arranged in parallel in the length direction of the needle body 1. Is the case. From this configuration, the peripheral surface of the needle body 1 other than the portion where the small blade 2 and the recessed groove portion 4 described later are provided is a curved arc surface.

また、本実施例は、針本体１の湾曲部位の外面部，内面部の双方に凹溝部４が該針本体１の長さ方向に設けられており、この凹溝部４は、円弧の緩やかな浅底の凹溝４ａと、この凹溝４ａの中央位置にして針本体１の長さ方向に設けられる円弧の急な深底の凹溝４ｂとで構成されている。   Further, in this embodiment, the concave groove portion 4 is provided in the length direction of the needle main body 1 on both the outer surface portion and the inner surface portion of the curved portion of the needle main body 1, and the concave groove portion 4 has a gentle arc. A shallow groove 4a and a deep groove 4b having a sharp arc at the center of the groove 4a and provided in the length direction of the needle body 1 are formed.

その余は実施例１と同様である。   The rest is the same as in Example 1.

尚、本発明は、実施例１〜３に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。   In addition, this invention is not restricted to Examples 1-3, The concrete structure of each component can be designed suitably.

実施例１を示す斜視図である。1 is a perspective view showing Example 1. FIG. 実施例１を示す斜視図である。1 is a perspective view showing Example 1. FIG. 実施例１を示す断面図である。1 is a cross-sectional view showing Example 1. FIG. 実施例１を示す側面図である。1 is a side view showing Example 1. FIG. 図４のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図４のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 図４のＣ−Ｃ断面図である。It is CC sectional drawing of FIG. 図４のＤ−Ｄ断面図である。It is DD sectional drawing of FIG. 図４のＥ−Ｅ断面図である。It is EE sectional drawing of FIG. 図４のＦ−Ｆ断面図である。It is FF sectional drawing of FIG. 実施例１に係る要部の説明図である。FIG. 3 is an explanatory diagram of a main part according to the first embodiment. 実施例１に係る要部の説明図である。FIG. 3 is an explanatory diagram of a main part according to the first embodiment. 実施例１に係る要部の説明図である。FIG. 3 is an explanatory diagram of a main part according to the first embodiment. 実施例１に係る要部の説明図である。FIG. 3 is an explanatory diagram of a main part according to the first embodiment. 実施例１に係る要部の説明図である。FIG. 3 is an explanatory diagram of a main part according to the first embodiment. 実施例２に係る要部の説明断面図である。FIG. 6 is an explanatory cross-sectional view of a main part according to a second embodiment. 図１６のＧ−Ｇ断面図である。It is GG sectional drawing of FIG. 図１６のＨ−Ｈ断面図である。It is HH sectional drawing of FIG. 実施例３を示す斜視図である。10 is a perspective view showing Example 3. FIG. 図１９のＩ−Ｉ断面図である。It is II sectional drawing of FIG. 図１９のＪ−Ｊ断面図である。It is JJ sectional drawing of FIG.

符号の説明Explanation of symbols

１ 針本体
２ 小刃
３ 凹部
４ 凹溝部
５ 断面多角形状部
５’ 断面三角形状部
５” 断面四角形状部
５ａ 峰部
５ｂ 凹湾曲面
６ 断面円形状部 DESCRIPTION OF SYMBOLS 1 Needle main body 2 Small blade 3 Recessed part 4 Concave groove part 5 Section polygonal-shaped part 5 'Sectional triangular-shaped part 5 "Sectional square-shaped part 5a Peak part 5b Concave curved surface 6 Sectional circular-shaped part

Claims (13)

針本体の先端部に湾曲部位が設けられた縫合針であって、前記湾曲部位の外面部には凹部が設けられ、この凹部の縁部が凸状の小刃に設定されていることを特徴とする縫合針。   A suture needle in which a curved portion is provided at a distal end portion of a needle body, wherein a concave portion is provided in an outer surface portion of the curved portion, and an edge portion of the concave portion is set to a convex blade. A suture needle. 請求項１記載の縫合針において、前記凹部は複数設けられていることを特徴とする縫合針。   The suturing needle according to claim 1, wherein a plurality of the recesses are provided. 請求項１，２いずれか１項に記載の縫合針において、前記凹部は前記針本体の長さ方向に複数並設されていることを特徴とする縫合針。   The suturing needle according to any one of claims 1 and 2, wherein a plurality of the recesses are arranged side by side in the length direction of the needle body. 請求項１〜３いずれか１項に記載の縫合針において、前記湾曲部位の外面部には、前記針本体の長さ方向に長さを有する直線状の峰部が設けられ、この峰部には該峰部を分断する前記凹部が設けられ、この凹部の縁部にして前記峰部が前記凸状の小刃に設定されていることを特徴とする縫合針。   The suture needle according to any one of claims 1 to 3, wherein an outer surface portion of the curved portion is provided with a linear ridge portion having a length in a length direction of the needle body, and the ridge portion is provided with the ridge portion. The suturing needle is characterized in that the concave portion for dividing the peak portion is provided, and the peak portion is set to the convex small blade at an edge portion of the concave portion. 請求項１〜４いずれか１項に記載の縫合針において、前記湾曲部位の外面部，内面部の一方若しくは双方に凹溝部が前記針本体の長さ方向に設けられていることを特徴とする縫合針。   The suture needle according to any one of claims 1 to 4, wherein a concave groove portion is provided in one or both of an outer surface portion and an inner surface portion of the curved portion in a length direction of the needle body. Suture needle. 請求項５記載の縫合針において、前記凹溝部は複数本設けられていることを特徴とする縫合針。   6. The suturing needle according to claim 5, wherein a plurality of the concave grooves are provided. 請求項１〜６いずれか１項に記載の縫合針において、前記湾曲部位は断面多角形状部であり、この断面多角形状部における角縁同士間は凹湾曲面に形成されていることを特徴とする縫合針。   The suturing needle according to any one of claims 1 to 6, wherein the curved portion is a polygonal section in cross section, and the corner edges of the polygonal section in the cross section are formed in a concave curved surface. Suture needle to do. 請求項７記載の縫合針において、前記断面多角形状部は形状の異なる断面多角形状部を前記針本体の長さ方向に連設して構成されていることを特徴とする縫合針。   8. The suturing needle according to claim 7, wherein the polygonal cross-sectional portion is configured by connecting cross-sectional polygonal portions having different shapes in the length direction of the needle body. 請求項８記載の縫合針において、前記断面多角形状部は前記針本体の先端側に設けられる断面三角形状部と、この断面三角形状部よりも基端側に設けられる断面四角形状部とが連設された構成であることを特徴とする縫合針。   9. The suturing needle according to claim 8, wherein the polygonal cross-section portion is formed by connecting a triangular cross-section portion provided on the distal end side of the needle body and a quadrangular cross-section portion provided on the proximal end side with respect to the cross-sectional triangle portion. A suturing needle characterized by being provided. 針本体の先端部に湾曲部位が設けられた縫合針であって、前記湾曲部位の外面部には凹凸部が設けられ、この凹凸部の凸部が小刃に設定されていることを特徴とする縫合針。   A suture needle in which a curved portion is provided at the distal end portion of the needle body, and an uneven portion is provided on an outer surface portion of the curved portion, and the convex portion of the uneven portion is set to a small blade. Suture needle to do. 請求項１０記載の縫合針において、前記凹凸部の凹部は複数設けられていることを特徴とする縫合針。   The suturing needle according to claim 10, wherein a plurality of concave portions of the uneven portion are provided. 請求項１０，１１いずれか１項に記載の縫合針において、前記凹凸部の凹部は前記針本体の長さ方向に複数並設されていることを特徴とする縫合針。   The suturing needle according to any one of claims 10 and 11, wherein a plurality of concave portions of the concavo-convex portion are arranged side by side in the length direction of the needle body. 請求項１〜１２いずれか１項に記載の縫合針において、前記針本体の先端から基端側所定位置にかけて断面円形状部が設けられていることを特徴とする縫合針。   The suture needle according to any one of claims 1 to 12, wherein a circular cross section is provided from the distal end of the needle body to a predetermined position on the proximal end side.
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US9579098B2 (en) 2013-03-15 2017-02-28 King Saud University Bendable suture needle with free varying angle and holder therefor
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